Question

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Base on your understanding - pls do not copy & paste from internet research meaning.

In your own words and 2 -3 examples to support your saying –
How do you feel about Nano tech?
a) Its presence

b) Its uses and application

c) As a scientific fields

d) Future possibilities

Answer 1

a) Nano science and nanotechnology is the science and technology of ultra fine particles. Generally nanotechnology deals with developing materials, devices or other structures with at least one dimension, sized from.1 to 100 nanometers. Quantum mechanical effect are very important at this scale. At present, nanotechnology has also encouraged interdisciplinary research due to several peculiar and attractive properties of nanostructures nano materials are exceptionally strong, hard, and ductile at high temperatures, wear-resisatnt, erosion resistant and chemically very active. Properties of nano particles significantly differ from those at large scale. For example, the melting point of gold is dramatically reduced when tge particle diameter is below 5nm as things approach the nanoscale, new properties emerge due to size confinement and quantum phenomena. These new properties can be controlled to give us materials with new applications.

b) and c) applications and in scientific fields

1. Biomedicine

* diagnostics

Biological tests for measuring the presence or activity of selecteds substances become quicker, more sensitive and more flexible when certain nanoscale particles are put to work as tags or lables. Magnetic nano particles, bound to a suitable antibody, are used to label specific molecules structures or micro organisms.

* drug delivery

The overall drug consumption and side effects can be lowered significantly by depositing the active agent in the morbid region only.

* tissue engineering

Nanotechnology can help to reproduce or repair damaged tissues.

* genetic engineering

Magnetic nano particles can be used for a variety of genetic applications.

* biomedical Imaging

Magneticnnano particles are being used as an MRI contrast agent for transplanted neutral stem cell detection.

2. Electronics

* Memory and data storage

* display screen

Nanotechnology can improve display screens on electronics devices. Carbon nanotubes are electrically conducting and due to their small diameter of several nanometers, they can be used as field emitters with extremely high efficiency for field emission displays.

3. Space

Nanotechnology may hold the key to making space flight more practical.Advancecement in nano material make light weight spacecraft possible.

4. Chemical sensors

Nanotechnology can enable sensors to detect very small amount of chemical vapours. Various type of detecting elements such as carbon nanotubes, zinc oxide nanowires or palladium nano particles can be used in nanotechnology based sensors.

5. Energy conservation

* reduction of energy consumption

Nanotechnological approaches like light emitting diodes(LED) or quantum caged atoms(QCA) could lead to a strong reduction of energy consumption for illumination.

6.Quantum computers

7. Batteries etc are few application area of nanotechnology.

d) future

* tracking climate change

* self healing structures

* sensors will placed every where

* high data memory

* monitor our health

* nano robots will lead the offices

* nanocam for high security

* nanotechnology stock market etc are will emerge by using nanotechnology. There are number of possibilities of nanotechnology.